Electric indicator.



No. 760,58.- PATENTED MAY 24, 1904.

BISADLER. ELECTRIC INDICATOR.

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No. 760,563. 'PA-TENTED [MAY 24', 1904;

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ELECTRIC-INDICATOR; LPPLIUATIOI FILED [41' 16, 190?.

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Patented May Q4, 1904;

UNITED STATES O FICE,

EDWARD SADLER, OF UPPER TOOTING, ENGLAND.

ELECTRlC-INDIOATOB.

.SIECIFICATiON forming'part of Letters Patent No. 760,568, date Ma 24., 1904. Application filed May 16,1903. Serial No. 157,432. momma.)

To all whom may 6071106770.

Be it known that LEDwARD SADLER, a subject of the King of England, residing at Upper and useful Improvements in Electric Indicators, of which the following'is a specification.

.The present invention relates to improvements in electric indicators'for bellsor other purposes; and the principal object is to automatically reset the previous disk or other indicating device operated on a subsequent call or signal being given, such last indication be- I shield therefor, respectively. Fig. 5 is afront view of a modified form of indicator. is'a side view thereof. plan on line 7-7 of Fig. 6, and Fig. 8 is a diagram showing the method of connecting up the indicators.

The apparatus comprises for each disk or other indicating device a metal frame a or casing having suitable means of attachment to an indicator or baseboardfor instance,two lugs a, cut out and bent up from the metal-and in said casing are mounted two coils A and 0, one of which, A, is hereinafter termed the adjusting or resetting coil and theother, C, the indicating-coil. One of these coilsfor Fig. 6

' example, in Figs. 1 and 2 the resetting-coil.A

is woundround a soft-iron core B, havingits ends pro ecting beyond the coil and bearing in the casing, as at Z). The other coil, C, is

tached a .light sheet of metal or other suitable material forming the indicating-disk F, which is by preference bent to form an arc of a cylinder. The loose core D, arms E, and in- Fig; 7 is a sectionaldicating-disk F are adapted to rock easily on the'axisor pivots of said-loose core, stops be-' ing provided to limit the mo'vemen Tooting, England, haveinvented certain new Upon one. side for instance, the convex side-of the indicating-diskF, are alternately marked light and dark or suitable different-colored lines or other devices f and f those of one color being slightly widerthan those of the other color, andclose to and in front of said disk, but without touching it, is a plate G,

preferably bent similarly to the disk and having apertures 9 approximately corresponding in number, width,'and distance apart to the one-colored lines or devices on said disk. 1 This slotted plate maybe fixed to the casing wor to any other fixed partof the apparatus, -as desired. i

' The arms or pole-pieces E, and consequently the disk F, connected-'thereto, -are prevented from rotating too far in one direction bycoming in contact with the ends of the core B of the resetting-coil- A and in the other direction The different indicators may be suitably coiinected up,- for instance, as follows, reference being had to'F g. 8: Each 1nd1catmg-co1lC, C, or C has one end ofits w1re1n-connect1on withits respective push or'other contact de;

vice w, w, or m by wires 12 3,-respectivel y, all the other ends being carried to ageneralbinding-screwI by'wires 3 4 5,- with which'also is connected one endof thewire'6 of the'adjusting-coil A of the first indicator, the other-end of which is connected by wire 7 with the coil 5A of the second indicator and that by -wire 8 with the third, A and so on'that=is,-the ad-- a justing-coils A,A, and A are all connected in series. When contact is madesay at withe current travels through wire 9 from the bat-' tery 2 through the push and wire '1 round theindicating-ooil C, then over wire 3 to the general binding-screw I, and from thelatter over wire 6 round the adjusting-coilA of the first indicator, then in series over wires 7 and 8 round the similar coils A and A of the other indicators, and finally back by wire 10 and bell 3 ,to the battery. The coils are so connected and their wires so wound that similar poles will be induced at similar ends of the cores of any one indicator. It will be seen that in the indicator representing the first push both coils A and C will have the current passing round them, which being in a similar direction both cores will consequently become similarly magnetized, and as the arms or polepieces E aforesaid are attached to the core D of the indicating-coil C they will be repelled by the core B of the adjusting-coil A and the indicator-disk F, attached to said arms, moved so that the light colored lines, for instance, will show opposite the slots in the outer plate G and indicate that this disk has been operated. Should a signal be giventhat is, contact madefrom another point-say at wthe current will flow as in the first case, but with the difference that instead of passing through the indicating-coil C of the first indicator it will now pass to the corresponding coil C of the second indicator. The pole-pieces E of this indicator will be repelled and indication made; but with regard to the first indicator as the current is only passing through the adjusting-coil A thereof its core B is magnetized and will consequently attract the arms E,so that this indicator is reset to its normal non-indicating position.

Referring to Figs. 5, 6, and 7, in conjunction with the above indicator I may when desired use avibrating disk H, preferably twocolored and moving behind a slotted plate J and so arranged as to be operated by the attraction of an armature H (attached thereto and suspended from the casing at H by the core of the indicating-coil C at the same time as the arms E of the coil A are repelled to operate the main indicator-disk F, as above stated. As the indicating movement .of the indicator-disk depends upon the mutual repulsion of the similar poles of the cores B and D and the resetting movement on the attraction of either for the other, it is immaterial which of the coils-in Figs. 1 and 2 be used as indicating-coil and which as resetting-coil. It is thereforeequally immaterial whether the oscillatory core D, carrying the pole-piece, be within coil A or coil C. In Figs. 5 to 7 it is shown in the coil A because the coil 0 nearer the armature H must in this case be used as indicating-coil. The arrangement of disk H is for the purpose of allowing the indication to remain visible for a longer time after the main indicator-disk F has been reset should two signals be given or contact made in quick succession from two different points, since disk H acts as a free pendulum and continues to oscillate for some time when once set in motion.

A collar 6 or a stop or stops If 0 Figs. 1 and 5, of diamagnetic material, may be placed on the cores of the indicating and resetting coils to prevent too strong an attraction of the arms E or armature H, respectively.

I do not confine myself to the arrangements, constructions, and connections above set out, as the same may be varied within wide limits without departing from the spirit of the invention.

The invention with suitable modifications may also be adapted to other indicating means than for electric bells, as describedfor instance, to ships engine-room and conningtower indicators or telegraphs, railway-station and signal-box indicators or instruments, and so on.

I declare that what I claim is 1. In a signal-indicating system the combination of a series of indicating-coils severally connected electrically to the points whence signals are to be transmissible a corresponding series of resetting-coils collectively connected in series and common to all the signalcircuits, said indicating and resetting coils being located in pairs with their similar poles adjacent to one another, a series of vibratory pole-pieces located to be magnetized by one of said coils to be respectively repelled from the other coil when current is flowing in both coils of a pair and to be attracted when one of said coils is idle and a series of corresponding signal-disks movable with said pole-pieces.

2. In a signal-indicating system the combination of a series of indicating-coils, severally connected electrically to the points whence signals are to be transmissible, a corresponding series of resetting-coils collectively connected in series and common to all the signalcircuits, said indicating and resetting coils being located in pairs with their similar poles adjacent to one another, soft-iron cores in said coils, vibratory pole-pieces on one of said cores of each pair, movable to and from the other core of the pair and a series of corresponding signal-disks connected to said polepieces.

3. Ina signal-indicating system the combination of a series of indicating-coils severally connected electrically to the points whence signals are to be transmissible, a corresponding series of resetting-coils, collectively connected in series and common to all the signalcircuits, said indicating and resetting coils being located in pairs with their similar poles adjacent to one another, soft-iron cores in said coils, vibratory pole-pieces on one of said cores of each pair, movable to and from the other core of the pair and a series of corresponding signal-disks connected to said polepieces and auxiliary vibratory signal-disks adapted to be set in free oscillatory motion by the successive energizing and deenergizing of their respective indicating-coils. V

4:. In an electric signal-indicator the combination of a frame, a core of soft iron lixed in said frame, a coil surrounding said core, a core of soft iron parallel to the aforesaid core 760,568 I I I Y Y 3 E journal ed in said frame, a coil surrounding through one of them, only, for the purpose I said journaled core, two pole-pieces eXtend-' ing from the ends of, the journaled, core and extended to contactwith the fixed core, a stop for limitingthe movement of said pole-pieces away from the fixed core, an indicating-disk attached to the 'journaledcore and means for passing electric current through both said cores in the same direction or alternatively v set forth. 1 I

In witness whereof I have signed this speci' fication in the presence of two witnesses.

EDWARD SADLER. 

